Wiktionary
dental spa
n. A dental regimen using spa treatments, intended to aid the comfort of the patient
Wikipedia
Dental spa
A dental spa is a dental facility supervised by a licensed Oral Health Care Provider in which dental services are provided alongside spa treatments.
"Spa dentistry" refers to dental practices that offer many services not normally associated with dental care: facials, paraffin wax hand treatment, reflexology, micro-dermabrasion, massage therapy, Botox and Restylane treatment, and many other pampering, therapeutic and rejuvenating offerings. The administration of botox and restylane is based on each respective state's dental board approval.